原数据：

const list = [
{id:1, key: 'a'},
{id:1, key: 'b'},
{id:2, key: 'c'},
{id:2, key: 'd'},
]

期望数据格式

const newList = [
{id:1, keyList: ['a','b']},
{id:2, keyList: ['c','d']},
]

// 相同id的数据合并let newList=_(list ).flatten().groupBy('id').map(_.spread((...values) => {console.log(values, 'values');let keyList: string[] = [];let newId = '';values?.forEach((item: any, index: number) => {if (index === 0) {newId = item?.id;}keyList.push(item?.key);});return { id: newId , keyList};}),).value() || [];console.log(newList, 'newList');

页面输出：